Displaying 3 results from an estimated 3 matches for "eflags_vm".
2006 Sep 19
0
Problem about rombios initializing network card''s PnP option ROM
...if (irq < 8)
interrupt(regs, irq + 8);
else
interrupt(regs, 0x70 + (irq - 8));
return;
}
switch (trapno) {
case 0:
regs->eflags|=eflags.TF
regs->eip++;
case 1: /* Debug */
if (regs->eflags & EFLAGS_VM) {
/* emulate any 8086 instructions */
if (mode != VM86_REAL_TO_PROTECTED)
panic("not in real-to-protected mode");
emulate(regs);
regs->eflags|=eflags.TF;
return;
}
goto invalid;
case 13:...
2007 Apr 18
4
[RFC, PATCH 1/24] i386 Vmi documentation
...are present. Since the switch into paravirtual mode
+ may happen dynamically, the guest OS must not rely on testing for a
+ specific privilege level by checking the RPL field of segment
+ selectors, but should check for privileged execution by performing
+ an (RPL != 3 && !EFLAGS_VM) comparison. This means the DPL of kernel
+ ring descriptors in the GDT or LDT may be raised to match the CPL of
+ the kernel. This change is visible by inspecting the segments
+ registers while running in privileged code, and by using the LAR
+ instruction.
+
+ The system als...
2007 Apr 18
4
[RFC, PATCH 1/24] i386 Vmi documentation
...are present. Since the switch into paravirtual mode
+ may happen dynamically, the guest OS must not rely on testing for a
+ specific privilege level by checking the RPL field of segment
+ selectors, but should check for privileged execution by performing
+ an (RPL != 3 && !EFLAGS_VM) comparison. This means the DPL of kernel
+ ring descriptors in the GDT or LDT may be raised to match the CPL of
+ the kernel. This change is visible by inspecting the segments
+ registers while running in privileged code, and by using the LAR
+ instruction.
+
+ The system als...